My site don't works without https

Should you not add an additional server block like this to force http to https?:

server {
       listen         80;
       server_name    mysite.com www.mysite.com;
       return         301 https://$server_name$request_uri;
}

And also add something like this in your current server block?:

        # This forces every request after this one to be over HTTPS
        add_header Strict-Transport-Security "max-age=31536000";